Box made of a cardboard sheet material, blank or blank assembly, and method and device for forming such a box

Abstract

The present invention relates to a box, to a blank or blank assembly, and to a method and device for forming a box made of a corrugated cardboard sheet material having a strap comprising at least four main rectangular panels, provided with at least one series of flaps suitable for at least partially forming the bottom and/or the tip of box, at least two of said main side panels being connected to a main central panel via intermediate panels forming cut corners without flaps. At least tow of the cut corners are formed by at least two rectangular cut side portions which are connected together or to the adjacent main panel by folding line, said cut side portions having a width of between 3 mm and 20 mm.

1 . A box ( 55 ,  71 ) of corrugated cardboard sheet material which has a polygonal cross-section, the box comprising a belt which comprises at least four main rectangular panels and which is provided with at least one series of flaps which are capable of at least partially forming the base and/or the top of the box, at least two of the main lateral panels being connected to a main central panel by intermediate panels, forming cut corners which do not have flaps, at least two cut corners being formed by at least two rectangular portions of cut face which are connected to each other or to the adjacent main panel by a folding line,
 characterized in that the portions of cut face have a width between 3 mm and 20 mm and in that at least two opposing main panels have different widths.   
     
     
         2 . The box as claimed in  claim 1 , characterized in that the width of the portion of cut face is less than or equal to 10 mm. 
     
     
         3 . The box as claimed in  claim 1 , characterized in that each main panel is connected to the adjacent main panels thereof by a cut corner. 
     
     
         4 . The box as claimed in  claim 1 , characterized in that at least two cut corners are each formed by at least three rectangular portions of cut face which have the same height and which are connected to each other by parallel folding lines, respectively. 
     
     
         5 . The box as claimed in  claim 4 , characterized in that at least two cut corners are each formed by at least four rectangular portions of cut face which have the same height and which are connected to each other by folding lines, respectively. 
     
     
         6 . The box as claimed in  claim 5 , characterized in that at least two cut corners are formed by at least eight rectangular portions of cut face which are connected to each other by folding lines. 
     
     
         7 . The box as claimed in  claim 1 , characterized in that two of the first opposing main panels have a first predetermined height and the other two second opposing main panels have a second predetermined height, the first height being different from the second height. 
     
     
         8 . The box as claimed in  claim 1 , characterized in that the cut corners have a third predetermined height which is different from the second height and/or the first height. 
     
     
         9 . The box as claimed in  claim 1 , characterized in that at least two portions of cut face of the same cut corner have different widths. 
     
     
         10 . The box as claimed in  claim 1 , characterized in that the box is formed from at least one blank comprising a succession of at least four main panels, each of which is connected to the adjacent panels thereof via intermediate panels forming cut corners, each main panel being provided with at least one flap, each cut corner comprising at least two portions of cut face. 
     
     
         11 . The box as claimed in  claim 1 , characterized in that each main panel is provided with a lower flap and an upper flap, the upper flaps being capable of forming the cover of the box, the lower flaps being capable of forming the base of the box. 
     
     
         12 . The box as claimed in  claim 1 , characterized in that the box is formed from two of the blanks which are wrapped around and bonded to each other in a head to tail arrangement. 
     
     
         13 . A blank or set of two blanks which is produced from corrugated cardboard sheet material and which is intended to form a box of polygonal cross-section, the blank or each of the blanks comprising a belt which comprises at least four main rectangular panels and which is provided with at least one series of flaps which are capable of at least partially forming the base and/or the top of the box, at least two of the main lateral panels being connected to a main central panel by intermediate panels, forming cut corners which do not have flaps, each intermediate panel being formed by at least two rectangular portions of cut face which are connected to each other or the adjacent main panel by a folding line, characterized in that the portions of cut face have widths between 3 mm and 20 mm, and in that at least two opposing main panels have different widths. 
     
     
         14 . The blank or set of blanks as claimed in  claim 13 , characterized in that the width of a portion of cut face is less than or equal to 10 mm. 
     
     
         15 . The blank or set of blanks as claimed in  claim 13 , characterized in that each main panel is connected to the adjacent main panels thereof by intermediate panels. 
     
     
         16 . The blank or set of blanks as claimed in  claim 13 , characterized in that at least two cut corners are formed by at least three rectangular portions of cut face which have the same length and which are connected to each other by parallel folding lines. 
     
     
         17 . The blank or set of blanks as claimed in  claim 16 , characterized in that at least two cut corners are formed by at least four rectangular portions of cut face which have the same length and which are connected to each other by folding lines. 
     
     
         18 . The blank or set of blanks as claimed in  claim 17 , characterized in that at least two cut corners are formed by at least eight rectangular portions of cut face which are connected to each other by folding lines. 
     
     
         19 . The blank or set of blanks as claimed in  claim 13 , characterized in that two of the first opposing main panels have a first predetermined length and the other two second opposing main panels have a second predetermined length, the first length being different from the second length. 
     
     
         20 . The blank or set of blanks as claimed in  claim 13 , characterized in that the cut corners have a third predetermined length which is different from the second length and/or the first length. 
     
     
         21 . The blank or set of blanks as claimed in  claim 13 , characterized in that at least two portions of cut face of the same intermediate panels forming a cut corner have different widths. 
     
     
         22 . A device for forming a box from at least one blank of corrugated cardboard sheet, comprising a belt which comprises at least four main rectangular panels and which is provided with at least one side having a series of flaps which are capable of at least partially forming the base of the box,
 with at least two main panels being connected to a main central panel by intermediate panels forming cut corners which do not have flaps, each cut corner being formed by at least two rectangular portions of cut face which are connected to each other by folding lines, the device comprising an assembly for picking the blank,   characterized in that, the portions of cut face having a width between 3 mm and 20 mm and at least two opposing main panels having different widths, the device comprises means for gluing the blank during the transfer to a mandrel,   the mandrel comprising at least two edges which comprise rounded angles capable of cooperating with the cut corners,   means for wrapping the blank around the mandrel in order to form the belt of the box and pressing means which are configured in order to fold the cut corners on the rounded edges and the flaps around the mandrel in order to form the base of the box by adhesive bonding.   
     
     
         23 . A method for forming a box from at least one blank of corrugated cardboard sheet, comprising a belt which comprises at least four main rectangular panels and which is provided with at least one side having a series of flaps which are capable of at least partially forming the base of the box,
 characterized in that,   with at least two main panels being connected to a main central panel by intermediate panels forming cut corners which do not have flaps, each cut corner being formed by at least two intermediate panels which form rectangular portions of cut face which are connected to each other by folding lines, characterized in that, the portions of cut face having a width between 3 mm and 20 mm, and at least two opposing main panels having different widths,   after the blank has been picked,   the blank is glued during the transfer towards a mandrel,   the mandrel comprising at least two edges which comprise rounded angles which are capable of cooperating with the cut corners,   the blank is wrapped around the mandrel in order to form the belt of the box and   the intermediate panels are pressed on the rounded edges and the flaps are pressed around the mandrel in order to form the cut corners and the base of the box.   
     
     
         24 . The method for forming a box as claimed in  claim 23 , characterized in that the box is formed from two blanks, the second blank being wrapped on the first blank once the first blank is formed.